In fact, the factors that measure the price of diamonds are not only the volume of diamonds, but also the cutting, color and purity of diamonds. If these aspects of diamonds are not excellent enough, the price of diamonds will be greatly reduced.
The cost-effective price of a carat diamond is about 70- 1 1000. This kind of diamond is usually cut well, with purity above VS grade and color above H grade. Although not top-notch, the overall quality is good and the price is relatively moderate, which is suitable for most people's choice.
Extended data:
I. Measurement of carats
1 carat = 200mg = 0.2g Klajo 205.3mg In the old gem book, if it is converted into the current carat, one carat will be multiplied by 1.0265. This is only a general description, because the carat value of different countries or regions in the old days was different.
Diamonds weighing less than 1 carat are usually measured in "points", 1 carat = 100 carat. On the certificate of diamond, the weight of diamond is accurate to the third decimal place.
IGI uses an electronic balance with an accuracy of 0.0000 1 carat to weigh the accurate weight of diamonds, and records it in the diamond appraisal report, accurate to two decimal places. So a 25 cent diamond weighs 0.25 carat. Diamonds of the same quality, the greater the weight, the more precious.
Second, the clarity of diamonds.
1, Flawless Grade (FL) Under the magnifying glass of 10, the diamond has no inclusions or surface defects.
2. If observed under the magnifying glass of 10 times, there are no inclusions in the diamond, but there are negligible defects on the surface, which can be removed by polishing.
3. Very slight inclusion grade (VVS) Under the magnifying glass of 10 times, there are extremely subtle flaws in the diamond, which is difficult for even professional appraisers to see.
4. Slight inclusion grade (VS) Under the magnifying glass of 10 times, you can see the defects of the diamond, but it is very small.
5. The microscopic inclusion grade (SI) is 10 times. Under the magnifying glass, this diamond has obvious defects.
6. The defect of inclusion grade (I) is very obvious under the magnifying glass of 10 times, and can be seen by naked eyes, and it also affects the firmness, transparency and luster of the diamond.
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